Device for scouring contact-surfaces of hand-hole plates in steam-boilers



(No Model.)

M. H. DETRIGK.

DEVIOE FOR'SGOURING CONTACT SURFACES 0? HAND HOLE PLATES IN STEAM BOILERS.

No. 550,0 9. Patented Nov. 19, 1895.-

i I i wwweweo M 9E gywgyvfoz 6% $48 SH 3 .7

UNITED STATES PATENT OFFICE.

MYRON H. DETRIOK, OF STERLING, ILLINOIS.

DEVICE FOR SCOURING CONTACT-SURFACES 0F HAND-HOLE PLATES IN STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 550,099, dated November 19, 1895.

Application filed February 11, 1895. Serial No. 537,918. (No model.)

To all whom it may concern:

Be it known that I, MYRON H. DETRICK, a citizen of the United States, residing in Sterling, in the county of Whiteside and State of Illinois, have invented a new and useful Im-' provement in Devices for Scouring the Contact-Surfaces of Hand-Hole Plates in Steam- Boilers, of which the following is a specification.

The tool which forms the subject of this invention is particularly designed and adapted to clean or scour the faces of the flanges or surfaces which immediately surround the hand-hole openings in a steam-boiler, as well as the faces of the hand-hole plates and the nuts which secure such plates in place, although it is adapted to clean other surfaces as well.

In the use of a steam-boiler the faces of hand-hole flanges, plates, and nuts become more or less corroded, so that when the plates and nuts are removed to clean the boiler it is necessary that the faces of the flanges, &c., be scoured off in'order that the parts may be fitted together again with steam-tight joints.

The invention consists in a tool having certain features of construction and arrangement, as hereinafter described, and pointed- ,out in the claims.

In the accompanying drawings, Figure 1 represents a top View of the tool with the disk portion thereof partially broken away. Fig. 2 shows a side view of the tool with said disk portion and the clamp-piece thereof in transverse section, the tool being illustrated in position to clean the flange surrounding a handhole, which flange is represented in transverse section. Fig. 3 shows a transverse section of the handle of the tool on line 3 3 of Fig. 2. Fig. 4 represents an end view of a sleeve adapted to clamp a smaller piece of emery-paper upon the disk and to enter the hole in a nut. Fig. 5 shows in section such a nut and a portion of the tool in place to operate upon the face thereof. Fig. 6 represents in transverse section a clamp-plate adapted to be used with the tool in cleaning the face of a hand-hol plate.

In the main the device is composed of a plate A, which is preferably made circular in outline or disk-shape, a handle B, attached to this plate, and a removable clamp-piece C, which is adapted to be secured to the disk A, (as by being screwed upon a spindle D, proj ecting from the face of the disk,) to clamp to 5 5 said disk a sheet or piece of emery-paper or equivalent material E, that is to scour the surface to be cleaned.

In use the device is intended to be given a rotary motion by the hand of the operator, either to the right or to the left, or to be oscillated in both directions.

As shown in Fig. 2, the device is applied to the face of the circular flange F, which surrounds a hand-hole G, and it will be 0bserved that the clamp-piece O is made slightly less in diameter than the hole, so that said piece acts as a guide to keep the device in a proper'position during rotation.

The handle B may be rigidly secured to the plate A, but I prefer to mount the handle so that it can be rotated with relation to the plate and to provide the parts with a ratchet device which will enable the handle to rotate the disk in either direction, step by step, or to oscillate the disk upon the surface to be cleaned without the necessity of the operator removing his hand from the device to obtain a fresh hold upon the handle thereof. Such a construction is represented in Figs. 1, 2, So and 3.

As shown in Fig 2, the handle is mounted to turn on the spindle D and is confinedthereto by a pin 1), which passes through a groove d on the spindle. The hub A on the plate A 8 5 is furnished with teeth or projections a, which are designed to be engaged by the pawlsH H, that are pivoted by pins h h, respectively, to a wing 19 projecting from the hub B of the handle. A spring J is located between the 9 outer ends of the pawls and tends to press their inner ends upon the hub A 3 but in order that only one pawl at a time shall be allowed to engage the hub, means are preferably provided to secure such result. These means consist of a sleeve K, mounted to turn upon a cylindrical projection 19 on the wing b, to which projection the sleeve is confined by a cap-plate and screw L l, the said sleeve having an car 10, adapted to engage the outer 10o ends of the pawls when the sleeve is turned. When the sleeve K is turned to the position shown in Figs. 2 and 3, its car 7.; will engage the outer end of the pawl ll and raise the inner end thereof out of engagement with the teeth a. If the sleeve be rotated one hunhred and eighty degrees, its ear 7; will depress the outer end of the pawl II and raise the inner end of said pawl out of engagement with the teeth a, so that either pawl may be made to act upon the teeth. If it is desired that both pawls shall act, the sleeve is turned ninety degrees from either of the positions described to the position shown by dotted lines at m, Fi 2, when the sprin .I will press both pawls into engagement. Thus it will be seen that the ratchet device described will enable the tool to be rotated step by step to the right or to the left, or to he oscillated in both directions without the operator removing his hand from the handle, as would be necessary were said handle rigidly secured to the disk A.

In Fig. 5 the application of the device to the securing of the face of a hand-hole nut M is indicated. The clamp-piece O is here shown in the form of an internally-threaded sleeve, which is screwed upon the spindle I), is adapted to clamp a smaller piece of emerypaper upon the disk A, and is adapted to en ter the hole in the nut and to guide the device in the operation. An end view of this clamp-piece is shown in Fig. El:-

The clamp-piece 0 (shown in Fig. (i) is for use in clamping upon the disk A a piece of e1nery-paper to scour the face of a handhole cover, which it is not necessary to illustrate, as from the foregoing description the use of the device will be readily understood. It will also be understood, without the necessity of special illustration, that the teeth a maybe placed upon the hub B and the pawls II II and their sleeve K upon, the hub A.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. A rotary scouring device comprising a plate or disk having an attached handle for rotating the same, and a clamp-piece removably secured to said plate upon the face opposite the handle and adapted to clamp thereto a sheet of the scouring material, and to act as a guide to the movement of the device, substantially as set forth.

2. A scouring device comprising a plate or disk a clamp-piece removably secured thereto for clamping a sheet of the securing material. to said plate, and adapted to act as a guide to the movement of the device; a handle revolubly mounted on the disk; and a ratchetdcvice for communicating motion from the handle to the plate, substantially as set forth.

3. In a scouring device, the combination of a plate or disk; a clamp-piece removably secured thereto for clamping a sheet of the scourin g material to said plate, and. adapted to act as a guide to the movement of the device; and a ratehet-device having two pawls and means for governing the engagement of said pawls, substantially as set forth.

In a scouring-device, the combination of a plate, A, having its hub furnished with ratchet-teeth; a removable clamp-piece; a handle revolubly mounted on said plate and provided with two spring pressed pawls adapted to engage said teeth, and a revolublc sleeve furnished with an car, A), for governing the engagement of the pawls with the teeth, substantially as set forth.

MYRON II. DETRICK.

\Vitnesses:

Q. J. WOLFENDEN, J. S. REYNOLDS. 

